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CVE-2026-24857— bulk_extractor has Heap-based Buffer Overflow vulnerability

Quick assessment

Affected
simsong bulk_extractor
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Building bulk_extractor是Simson L. Garfinkel个人开发者的一款高性能数字取证分析工具。 Building bulk_extractor 1.4及之后版本存在安全漏洞，该漏洞源于其嵌入式unrar代码在RAR PPM LZ解码路径中存在堆缓冲区溢出，可能导致越界写入、崩溃或内存损坏，并可能用于远程代码执行。

AI Predicted 9.8 Difficulty: Easy EPSS 0.44% · P38
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I. Basic Information for CVE-2026-24857

Vulnerability Information
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Vulnerability Title
bulk_extractor has Heap-based Buffer Overflow vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
`bulk_extractor` is a digital forensics exploitation tool. Starting in version 1.4, `bulk_extractor`’s embedded unrar code has a heap‑buffer‑overflow in the RAR PPM LZ decoding path. A crafted RAR inside a disk image causes an out‑of‑bounds write in `Unpack::CopyString`, leading to a crash under ASAN (and likely a crash or memory corruption in production builds). There's potential for using this for RCE. As of time of publication, no known patches are available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Building bulk_extractor 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Building bulk_extractor是Simson L. Garfinkel个人开发者的一款高性能数字取证分析工具。 Building bulk_extractor 1.4及之后版本存在安全漏洞，该漏洞源于其嵌入式unrar代码在RAR PPM LZ解码路径中存在堆缓冲区溢出，可能导致越界写入、崩溃或内存损坏，并可能用于远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
simsong bulk_extractor >= 1.4, <= 2.1.1 -

II. Public POCs for CVE-2026-24857

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III. Intelligence Information for CVE-2026-24857

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Vendor Advisories for CVE-2026-24857 (1)

IV. Related Vulnerabilities

Same vendor: simsong
Same weakness: CWE-122